diff --git a/src/Test/Core/JsonTest.cs b/src/Test/Core/JsonTest.cs
new file mode 100644
index 000000000..377043752
--- /dev/null
+++ b/src/Test/Core/JsonTest.cs
@@ -0,0 +1,23 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Nikse.SubtitleEdit.Core.SubtitleFormats;
+
+namespace Test.Core
+{
+    [TestClass]
+    public class JsonTest
+    {
+        [TestMethod]
+        public void TestUnicodeFirst()
+        {
+            var result = Json.DecodeJsonText("\u05d1 ");
+            Assert.AreEqual("ב ", result);
+        }
+
+        [TestMethod]
+        public void TestUnicodeLast()
+        {
+            var result = Json.DecodeJsonText(" \u05d1");
+            Assert.AreEqual(" ב", result);
+        }
+    }
+}
diff --git a/src/Test/Test.csproj b/src/Test/Test.csproj
index b472b9172..b5187ba7a 100644
--- a/src/Test/Test.csproj
+++ b/src/Test/Test.csproj
@@ -64,6 +64,7 @@
     <Compile Include="Assa\ResamplerTest.cs" />
     <Compile Include="Assa\AssaTimeCodes.cs" />
     <Compile Include="Core\AudioToTextTest.cs" />
+    <Compile Include="Core\JsonTest.cs" />
     <Compile Include="Core\MergeShortLinesUtilsTest.cs" />
     <Compile Include="Core\CsvUtilTest.cs" />
     <Compile Include="Core\WebVttHelperTest.cs" />
diff --git a/src/libse/AutoTranslate/MyMemoryApi.cs b/src/libse/AutoTranslate/MyMemoryApi.cs
index e4534135a..28a4eabe9 100644
--- a/src/libse/AutoTranslate/MyMemoryApi.cs
+++ b/src/libse/AutoTranslate/MyMemoryApi.cs
@@ -23,7 +23,7 @@ namespace Nikse.SubtitleEdit.Core.AutoTranslate
         public void Initialize()
         {
             _httpClient = DownloaderFactory.MakeHttpClient();
-            _httpClient.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36");
+            _httpClient.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0");
             _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=UTF-8");
             _httpClient.BaseAddress = new Uri("https://api.mymemory.translated.net/get");
         }
diff --git a/src/libse/SubtitleFormats/Json.cs b/src/libse/SubtitleFormats/Json.cs
index 06744d9ab..3926e209d 100644
--- a/src/libse/SubtitleFormats/Json.cs
+++ b/src/libse/SubtitleFormats/Json.cs
@@ -66,7 +66,7 @@ namespace Nikse.SubtitleEdit.Core.SubtitleFormats
                 if (c == '\\' && !keepNext)
                 {
                     keepNext = true;
-                    if (i + 6 < text.Length && text[i + 1] == 'u' &&
+                    if (i + 5 < text.Length && text[i + 1] == 'u' &&
                         hexLetters.Contains(text[i + 2]) &&
                         hexLetters.Contains(text[i + 3]) &&
                         hexLetters.Contains(text[i + 4]) &&